Ball valve for mounting unto a flat surface



FIG. 1 is a front, side and top perspective view;

FIG. 2 is a front elevational view;

FIG. 3 is a side elevational view;

FIG. 4 is a top plan view;

FIG. 5 is a bottom plan view

FIG. 6 is a rear elevational view; and,

FIG. 7 is a perspective view illustrating use of the invention, the broken lines forming no part of the claimed design.

The broken lines in FIG. 6 form no part of the claimed design. 

The ornamental design for a ball valve for mounting unto a flat surface, as shown and described. 